This Note reviews presentations made at a meeting for experts, held at the Risø Laboratory, concerning possible approaches to improving understanding of local wind climates within large offshore wind farms and particularly their impact on downwind wind farms. Such effects are detectable both within and beyond the boundaries of each windfarm, which typically has 10 to 100 large turbines of rotor diameter up to 80 m and hub-heights between 60 and 80 m.
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References
1.
BarthelmieR.J.FolkertsL.OrmelF.SanderhoffP.EecenP.StobbeO.NielsenN.M. (2002) Offshore wind turbine wakes measured by SODAR. Journal of Atmospheric and Oceanic Technology, In review.
2.
BradleyE.F. (1978) A micrometeorological study of vertical profiles and surface drag in the region modified by a change in surface roughness. Quarterly Journal of the Royal Meteorological Society, vol. 94, pp. 361–379.
3.
BossanyiE.A.MacleanC.WhittleG. E.DunnP. D.LipmanN. H.MusgroveP. J. (1980) The efficiency of wind turbine clusters, Third International Symposium on Wind Energy Systems, BHRA, Copenhagen, Denmark, August.
4.
BulderB.H. (1997) FyndFarm – a wind farm design support tool, Proceedings of the ECWEC conference held at Dublin 1997, pp. 246–248, October.
5.
CsanadyG.T. (1974) Equilibrium theory of the planetary boundary layer with an inversion lid. Boundary-Layer Meteorology, Vol. 6, pp. 63–79.
6.
DavidsonM.J.SnyderW.H.LawsonR.E.HuntJ.C.R. (1996) Wind tunnel simulations of plume dispersion through groups of obstacles. Atmospheric Environment, Vol. 30, pp. 3715–3731.
7.
FrandsenS. (1992) On the wind speed reduction in the centre of large clusters of wind turbines, Journal of Wind Engineering and Industrial Aerodynamics, vol. 39, pp. 251–265.
8.
FrandsenS.ThøgersenM.L. (1999) Integrated fatigue loading for wind turbines in wind farms by combining ambient turbulence and wakes, Wind Engineering, Vol. 23, No. 6, pp. 327–340.
9.
HegbergT. (2002) The effect of large wind farms on the atmospheric boundary layer, Proc. Of Global Windpower Conference 2002, Paris, France.
10.
HuntJ.EamesI. (2002) The disappearance of laminar and turbulent wakes in complex flows. Journal of Fluid Mechanics, vol. 457, pp. 111–132.
11.
JensenN.O. (1978) Change of surface roughness and the planetary boundary layer. Quarterly Journal of the Royal Meteorological Society, vol. 104, pp. 351–356.
12.
MortensenN.G.LandbergL.TroenI.PetersenE.L. (1993) Wind Analysis and Application Program (WASP). Risø-I-666 (EN)., Risø National Laboratory, Roskilde, Denmark.
13.
PanofskyH.A.TownsendA.A. (1964) Change of terrain roughness and the wind speed profile. Quarterly Journal of the Royal Meteorological Society, vol. 90, pp. 147.
14.
PetersenE.JensenN.O.HøjstrupJ. (1979) Observations of downwind development of wind speed and variance profiles at Bognaes and comparison with theory. Quarterly Journal of the Royal Meteorological Society, Vol 105, 521–529.
15.
PryorS.C.BarthelmieR.J. (2002) Statistical analysis of flow characteristics in the coastal zone. Journal of Wind Engineering and Industrial Aerodynamics, vol. 90, pp. 201–221.
16.
SemprevivaA.M.LarsenS.E.MortensenN.G.TroenI. (1990) Response of neutral boundary layers to changes of roughness. Boundary-Layer Meteorology, Vol. 50, No. 1–4, pp. 205–226.
17.
SmedmanA.-S.BergströmH.GrisogonoB. (1997) ‘Evolution of stable internal boundary layers over a cold sea’, J. Geophys. Res., Vol. 102, No. C1, pp. 1091–1099.
